AMD’s AI director just analyzed 6,852 Claude Code sessions, 234,760 tool calls, and 17,871 thinking blocks. Her conclusion: “Claude cannot be trusted to perform complex engineering tasks.” Thinking depth dropped 67%. Code reads before edits fell from 6.6 to 2.0. The model started editing files it hadn’t even read. Stop-hook violations went from zero to 10 per day. Anthropic admitted they silently changed the default effort level from “high” to “medium” and introduced “adaptive thinking” that lets the model decide how much to reason. No announcement. No warning. When users shared transcripts, Anthropic’s own engineer confirmed the model was allocating ZERO thinking tokens on some turns. The turns with zero reasoning? Those were the ones hallucinating. AMD’s team has already switched to a...
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